Which of the following factors affects the length of the larvae life cycle for mosquitoes?

The length of the larvae life cycle for mosquitoes is significantly influenced by temperature and the availability of food. Temperature plays a crucial role in the metabolic rate of the larvae; warmer conditions generally accelerate their development, leading to a shorter life cycle. Conversely, cooler temperatures can slow down metabolic processes, resulting in a longer larvae stage.

Furthermore, the availability of food directly impacts the growth and development of mosquito larvae. Adequate nutrition allows larvae to grow and mature more quickly, while limited food resources can prolong their developmental time as they may experience stunted growth or delayed progression to pupation.

Humidity levels, urbanization, and predator presence also influence mosquito populations but do not have the direct and significant impact on the developmental timing of the larvae as temperature and food availability do. For example, while humidity can affect the overall survival rate of larvae, it does not specifically dictate the length of the life cycle in the same way that temperature and food availability do.